Code will no longer run after error in terminal

[Nostang3]

Type: Bug

I wrote code to was using asycrio to capture stdout of a subprocess shell. The decoder received a character that it couldn't handle. The deoder was set to utf8. It caused an exception. And from that point on when hitting the run button does nothing.

VS Code version: Code 1.90.0 (89de5a8d4d6205e5b11647eb6a74844ca23d2573, 2024-06-04T19:33:54.889Z)
OS version: Windows_NT x64 10.0.22631
Modes:

System Info

Item	Value
CPUs	AMD Ryzen 7 5800X 8-Core Processor (16 x 3800)
GPU Status	2d_canvas: enabled canvas_oop_rasterization: enabled_on direct_rendering_display_compositor: disabled_off_ok gpu_compositing: enabled multiple_raster_threads: enabled_on opengl: enabled_on rasterization: enabled raw_draw: disabled_off_ok skia_graphite: disabled_off video_decode: enabled video_encode: enabled vulkan: disabled_off webgl: enabled webgl2: enabled webgpu: enabled
Load (avg)	undefined
Memory (System)	31.92GB (14.55GB free)
Process Argv	--crash-reporter-id 30c69368-395a-476c-b6ce-c9033ab2e049
Screen Reader	no
VM	0%

Extensions (12)

Extension	Author (truncated)	Version
remotehub	Git	0.62.0
vsc-python-indent	Kev	1.18.0
debugpy	ms-	2024.6.0
python	ms-	2024.8.0
vscode-pylance	ms-	2024.6.1
remote-ssh	ms-	0.110.1
remote-ssh-edit	ms-	0.86.0
remote-wsl	ms-	0.88.2
powershell	ms-	2024.2.2
remote-explorer	ms-	0.4.3
remote-repositories	ms-	0.40.0
vscode-yaml	red	1.15.0

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[karthiknadig]

Can you share the code that is causing this issue?

[Nostang3]

Can you share the code that is causing this issue?

I've made a few changes since then but this is the gist of it. This was a proof of concept code to make sure I could capture all the stdout of a process opened by create_subprocess_shell. Streamlink offers a unique situation were the output eventually stops outputting new lines and just updates the same line over and over again as it updates size and Mbps of the capture which was the hard part for me. I"m not that great at the more trickier python coding, asyncio is very new to me, so please feel free to point out mistakes or better way to do this if you feel inclined. That in and of itself could be the cause of the error.

Made a comment in the code for the area of error and how I basically ignored the error to make it work.

import asyncio

async def run_command_live_output(command):
    # Create a subprocess
    process = await asyncio.create_subprocess_shell(
        command,
        stdout=asyncio.subprocess.PIPE,
        stderr=asyncio.subprocess.PIPE,
    )

    async def read_stream(stream, callback):
        while True:
            line = await stream.read(65)
            if line:
                try:
                    callback(line.decode(encoding='utf8', errors='ignore'))  # ,<=== I didn't have the ignore option before but had to use it to remove the errors. 
                except UnicodeDecodeError as uniE:
                    print(f"UnicodeDecodeError: {uniE}")
            else:
                break

    await asyncio.gather(
        read_stream(process.stdout, lambda x: print(x, end='', flush=True)),
        read_stream(process.stderr, lambda x: print(x, end='', flush=True))
    )

    return_code = await process.wait()
    if return_code != 0:
        print(f"Command failed with return code {return_code}")
    else:
        print("Command completed successfully")

async def main():
    streamer = "bobross"
    command = f"streamlink twitch.tv/{streamer} best --stdout --progress force -o {streamer}.mp4"
    await run_command_live_output(command )
     
try:
    asyncio.run(main())
except KeyboardInterrupt:
    print("\nStopped by Interrupt")

[eleanorjboyd]

Hi! Are you still experiencing this issue?

[Nostang3]

I haven't worked on this personal project in a long time so the issue hasn't come up. If I get a chance I can try again.